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Microstructure, texture, and mechanical properties of friction stir welded commercial brass alloy
Microstructural evolution during friction stir welding of single-phase brass and corresponding mechanical properties were investigated. For this purpose, 2mm thick brass plate was friction stir welded at a rotational speed of 450rpm and traverse speed of 100mm/min. The microstructure of the joint wa...
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Published in: | Materials characterization 2016-09, Vol.119, p.84-91 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Microstructural evolution during friction stir welding of single-phase brass and corresponding mechanical properties were investigated. For this purpose, 2mm thick brass plate was friction stir welded at a rotational speed of 450rpm and traverse speed of 100mm/min. The microstructure of the joint was studied using optical microscopy, scanning electron microscopy equipped with electron back scattered diffraction system, and scanning transmission electron microscopy. The mechanical properties were measured using hardness and tensile tests. The formation of subgrains and their transformation into new grains in conjunction with existence of A1⁎, A2⁎ and C texture components revealed that the continuous dynamic recrystallization plays a dominant role in the microstructural evolution. However, grain boundary bulging, along with the formation of twin boundaries, and presence of the G texture component showed that the discontinues dynamic recrystallization may participate in the new grain formation. Furthermore, the different strengthening mechanisms, which caused the higher strength of the joint, were discussed.
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•Microstructural evolution during FSW of a single phase brass was investigated.•CDRX and DDRX were the main mechanisms of the grain structure formation during FSW.•GDRX and SRX were not contributed in grain structure formation.•The lamellas TBs were formed in the SZ of the joints.•Grain boundary, dislocation, and texture effects resulted in higher strength. |
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ISSN: | 1044-5803 1873-4189 |
DOI: | 10.1016/j.matchar.2016.07.009 |